Mastery

The Mastery system was the primary progression system for weapons and Behemoths until Patch 1.5.0, where it was replaced with the Slayer's Path. It is filled with objectives for Slayers to complete as they hone their skills with different Weaponry and hunt the Behemoths of the Shattered Isles. As you gain Mastery, your Slayer level will also increase. As your Slayer level increases, so will your effectiveness - with increased health, stamina, and various perks.